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Gary A. Monroe @ USDA-NRCS PLANTS Database |
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| USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 3 |
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Summary
Physical Characteristics
Penstemon grandiflorus is a PERENNIAL growing to 1.2 m (4ft).
See above for USDA hardiness. It is hardy to UK zone 3. It is in flower from July to August. The species is hermaphrodite (has both male and female organs).
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers dry or moist soil.
UK Hardiness Map
US Hardiness Map
Synonyms
Plant Habitats
Cultivated Beds;
Edible Uses
References More on Edible Uses
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Analgesic Febrifuge Stomachic
A decoction of the roots has been used in the treatment of chest pains and stomach aches[257]. A decoction of the leaves has been used in the treatment of chills and fevers[257].
References More on Medicinal Uses
Other Uses
References More on Other Uses
Cultivation details
Succeeds in ordinary rich garden soils so long as they are well-drained[1]. Requires plenty of moisture in the growing season[1]. A very ornamental plant[1], it is very cold hardy, but some protection from winter wet is beneficial for this plant[200].
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
Type a value in the Celsius field to convert the value to Fahrenheit:
Fahrenheit:
Plant Propagation
Seed - sow late winter in a greenhouse[1]. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in late spring. Alternatively, the seed can be sown in early summer in a greenhouse, the seedlings overwintered in the greenhouse and then planted out in the following spring[1]. Division in autumn[111]. Cuttings can be taken throughout the growing season, though August/September is best[1].
Other Names
If available other names are mentioned here
Native Range
NORTHERN AMERICA: United States (Iowa, Kansas, Minnesota, Missouri (northwest), Nebraska, North Dakota, South Dakota, Illinois, Oklahoma, Wisconsin, Colorado (east), Wyoming (northeast), New Mexico, Texas)
Weed Potential
Right plant wrong place. We are currently updating this section.
Please note that a plant may be invasive in one area but may not
in your area so it's worth checking.
Conservation Status
IUCN Red List of Threatened Plants Status :
IUCN Red List
Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.
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Expert comment
Author
Nutt.
Botanical References
43200
Links / References
For a list of references used on this page please go here
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Subject : Penstemon grandiflorus
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